{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:43.507594", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2019-May-29_to_2019-Jun-02_106.5_22.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2019050000799}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "May 29 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 02 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 60071.634475491825}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["China", "Vietnam"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 22.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 106.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "106.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 103.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 107.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.97, 21.47], [105.75, 22.0], [105.97, 22.53], [106.5, 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[106.15, 22.75], [106.18, 22.68], [106.25, 22.65], [106.5, 22.75], [106.75, 22.65], [106.82, 22.68], [106.85, 22.75], [106.75, 23.0], [106.97, 23.53], [107.5, 23.75], [108.03, 23.53], [108.25, 23.0], [108.15, 22.75], [108.25, 22.5], [108.03, 21.97], [107.68, 21.82], [107.53, 21.47], [107.0, 21.25], [106.75, 21.35], [106.68, 21.32], [106.53, 20.97], [106.0, 20.75], [105.75, 20.85], [105.5, 20.75], [105.25, 20.85], [105.0, 20.75], [104.75, 20.85], [104.5, 20.75], [103.97, 20.97], [103.82, 21.32], [103.47, 21.47], [103.25, 22.0], [103.35, 22.25], [103.25, 22.5], [103.35, 22.75]]]]}, "2019-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.35, 22.75], [103.25, 23.0], [103.47, 23.53], [104.0, 23.75], [104.25, 23.65], [104.5, 23.75], [104.75, 23.65], [105.0, 23.75], [105.25, 23.65], [105.5, 23.75], [106.03, 23.53], [106.25, 23.0], [106.15, 22.75], [106.18, 22.68], [106.25, 22.65], [106.5, 22.75], [106.75, 22.65], [106.82, 22.68], [106.85, 22.75], [106.75, 23.0], 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[103.47, 21.47], [103.25, 22.0], [103.35, 22.25], [103.25, 22.5], [103.35, 22.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.552365579017987}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.574290205980165}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.234036798776856, 23.499998092789156, 22.366820328227675, 21.404089538753396, 23.17017320176467]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.47450465418973, 22.422890259979397, 18.651501449414184, 18.9966149778694, 20.07734486065874]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.144600938012516, -2.9536792555945794, -3.360577805865749, 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